COMPLETE   SPECIFICATIONS.
rule the following side slopes and widths at grade
ed:    In earth excavations 22 feet at grade, with side
one horizontal to one vertical.    In rock excavations
,t grade, with side slopes of one-fourth horizontal to
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mbankments the side slopes shall be one and one-half
w**—.al to one vertical, and the width at grade shall be for
-anks less than six feet in height, sixteen feet; for banks six
;eet in height and up to sixteen feet in height, eighteen feet;
and in banks over sixteen feet in height, twenty ^ feet; but these
widths and slopes may be varied at the discretion of the En-
gineer.
The road bed and the slopes of all excavations and embank-ments must be neatly and truly finished to the stakes and directions given, and no wheel tracks or other depressions left which will lead the water along the road. After finishing the work the contractor must build such fences or other obstructions as will prevent teams from driving along the road and maintain them until the final acceptance of his work, and he must repair any damage resulting from neglect of this pre-caution.
In rock cuts the Contractor will, as a rule, be required to carry excavations six inches below the ordinary sub-grade, in order to allow for ballasting. If of suitable quality, the rock thus excavated shall be broken up so that it will all pass through a two-inch ring and be left in good surface to receive the track. For this breaking and surfacing an additional allowance of 25 cents per yard measured in excavation will be allowed.
Excavation and Ditching.—All material taken from excavations, whether for the road bed or for ditches, new channels, or other accessory works, shall be used as the Engineer shall in each case direct. Where there is any surplus beyond what is needed for the embankments, which for this purpose may be widened to any extent, it shall be deposited in spoil banks. All spoil banks shall be sloped on the side next the road with a slope not steeper than one and one-half to one, and be kept at least six feet from the edge of the excavation.
The Contractor when so directed by the Engineer, shall deposit at such convenient points as he may designate, any stone or other valuable material which may be found in the excava-tions. All material so deposited shall be the property of the Railway Company, and the Contractor will be held responsible for its safe keeping until removed by said Company, or until this contract is closed.
All falls or slides from the sides of the excavations shall